Correct way to communicate with server

Question

Ok,
I have a server program that is written in C++. The protocol for communicating is:
Command (8 bytes)| Data length or 0 (8 bytes) | Data (if any)
The command is in character form. A command would be OPEN.
This is the simplified code of what I am doing:
BufferedOutputStream bos = new BufferedOutputStream(socket.getOutputStream, 12800);
byte[] ba= new byte[16];
byte[0] = 'O';
byte[1] = 'P';
byte[2] = 'E';
byte[3] =' N';
byte[8] = '0';
bos.write(ba,0,16);
This does not seem to work as the server reports data amount is incorrect. My question: What is the correct way to do what I trying to do?
Thanks for any help,
cmp2

Answer 1

Thanks for the reply,
I have no idea what you think you are doing with the next line...
byte[8] = '0'In my attemp to get this to work, I decided maybe it's looking for a zero. Anyway, I moved the server to another computer and it is no longer having problems receiving my data. However, it isn't sending back a correct response, at least I don't think so. So this is my simplified reading code:
BufferedInputStream bis = new BufferedInputStream(socket.getInputStream(),128000);
byte[] bi = new byte[16];
int size = bis.read(bi)
The size is 8 and the charater converted output is : O0020000. The first character matches the first one I sent.
I am expecting a command like CNAK or SNAK being sent.
Any ideas?